William 'deeply upset' by Diana's Panorama interview

The young Duke of Cambridge was left “deeply upset” by the Panorama interview
in which his mother lifted the lid on her marriage to the Prince of Wales -
after she had assured him it would contain nothing controversial - according
to a new biography.

Diana, The Princess of Wales, is interviewed by the BBC's Martin Bashir (R) in the current affairs program, Panorama, 20 November 1995Photo: AFP

7:00AM BST 05 May 2012

A 13-year-old schoolboy at the time, the young William watched the programme in the study of Andrew Gailey, his house master at Eton, says the book by Penny Junor.

Mr Gailey was said to have insisted that Diana explain face-to-face what she was about to do after learning about the BBC interview, and she eventually “reluctantly” agreed to go to the school.

The meeting lasted no longer than five minutes, during which she assured her son that the interview would “not contain anything controversial” and “would make him proud of her”, according to Junor.

But the young royal was said to have been left in disbelief by the succession of startling claims made by Diana – to an audience of 20 million people – including the revelation that: “There were three of us in this marriage.”